UK customer here. Ordered my 16gb nexus 7 at 7.40am on the morning of 16th August. Received a despatched email at around 3pm the same day. Nexus was then delivered the following day at around 1pm in the afternoon.
Amazing delivery from google. I remember being very impressed by them in 2010 when i ordered my Nexus One and it got to me from California in 4 days, 2 of which were a weekend.
Back to the nexus. Absolutely loving it so far. The screen craps all over my iPad 2 and its obviously a lot faster. Ive had no problems so far, no screen flickering, no spongey screen. Awesome.